Desk-lamp



(No Model.)

W. E. WARD.

2 Sheets -Sheet 1.

DESK LAMP.

Patented June 14,1898.

WITNESSES: INVENTOR 75 z 43% William EWard,

(No Model.) 2 Sheets-Sheet 2.

W. E. WARD.

DESK LAMP Patented June14, 1898.

INVENTOR William E. Ward I BY WITNESSES: 6 :5. @m

HIS ATTORNEY Nrrn STATES DES K-LAM P.

SPECIFICATION forming part of 'Letters Patent No. 605,529, dated June 14, 1898.

Application filed January Z, 1897. Serial No. 617,786. (No model.)

pits, music-racks, pictures, and the like.

It is the object of the invention not only to make a lamp which may be readily located and fixed upon the object to be illuminated, but to so construct the shield or casing that the light may be direct to the especial part to be illuminated and cut off in all other directions.

The invention has for its further object the construction of a lamp for the above purposes in a manner such that it shall be readily adjustable, economically manufactured, and adapted for the accommodation of any of the incandescent lights now on the market.

To this end the invention consists in the construction and combination of parts hereinafter fully described, and set forth in the claims.

In the accom panyiug drawings, which form a part of this specification, Figure l represents in perspective one formof the improved lamp as applied to a 1n usic-stand. Fig. 2 represents a longitudinal axial section through said casing. Fig. 3 is a transversesection through the same. Fig. 4 represents in plan a modified form of the lamp and bracket as applied to the top of a desk. Fig. 5 is a vertical section through the same, taken in the plane indicated by line 5 5. Fig. 6 is a horizontal axial section of the casing-as seenin Fig. 4., the inner portion of the lamp-socket being broken away. Fig. 7 is an end View of this form of easing and'a portion of the supporting-bracket.

I will first describethe invention as embodied in Figs. 1, 2, and 3. The casing or shield of the lamp consists of a semicylindrical shell A, closed at its ends by the plates B and O, and the detached complementary semicylindrical shell D, mounted within the shell A and freely adjustable about the axis movement of said casin g. G of the casing and the other end of yoke F common to these two shells. 'The free edges of the shell D are bound together at its ends by any suitable means, such as the strips E, which make a complete cylinder at these points. This casing may be supported in any suitable form of bracket, of which two styles are illustrated. -That which is best adapted for attachment to music-stands, picture-frames, and similar objects is illustrated in Figs. 1, 2, and 3,wherein the casing is shown axially mounted in a yoke F, which has connected to the back thereof the plate or stem G. Upon this stem is mounted a clip ILwhich is longitudinally adjustable thereon and is provided with a set-screw I, which bears against the plate G and clamps a portion, as J, (see dotted lines, Fig. 3,) of the object to which the lamp is to be secured between the projecting lip of the clip H and the plate G. Not only is the shell D axially adjustable within the shell A to regulate the opening through which light from the lamp K may issue, but the shell A itself is axially adj ustable within the yoke, so that the opening formed between the two shells may be directed at any desired angle. The edges of these shells are also preferably outwardly turned, as indicated at 88, which outwardly-turnedportions may be projected to a greater or less extent, as may be desired, to form shielding or refiecting portions.

i As seen in Fig. 2, the akial mounting and adjustment of the lamp-casing may be accomplished by inserting through the head B of the casing a thimble Z, to which the lampsocket is removably connected on the inside of the casing, and which thimble has its outer end mounted in an opening in the yoke F and constitutes a trunnion for the axial Through the head is passed a screw, as L, upon which turns a nut, as indicated, against the outer side ofv the yoke.

By the manipulation of this nut the casing may be fixed in any adjusted position.

In Figs. 4 and 5 the arm or bracket ismade extensible by mounting the portion M to slide within a sheath or tubular portion N. To limit the outward movement of the portion M, a tongue, as O, is formed upon or mounted in the inner end thereof and provided with a projecting lip, which shall spring into an opening formed in the upper side of said sheath, as indicated. Any other suitable stop may be employed instead of this lip. The construction best adapted for securing this bracket to the desired object, as the top of a desk, (indicated at P,) consists of a clip H", made to slide upon the downwardly-bent end of the sheath N, and a screw Q, which passes through said sheath and the clip, by which the latter is made to clamp the edge of the desk-top between the clip and the sheath, as indicated in Fig. 5. Obviously the form of clip shown at H may be used on a desk, if desired; but the form shown at H is preferable, as it provides against any undue projection of parts beyond the desk.

In Fig. 2 Ihave shown the heads of the casing as rigidly secured to the casing A. I may, however, make one of these heads removable from the casing, as indicated in Fig. 6, wherein the head B is so shown. In this construction I connect the free edges of the shell A at that end of. the case by means of a strip E, similar to the strips E, which connect the free edges of the inner shell B.

In Fig. 2 I have also shown the thimble Z, to which any form of lamp-socket may be attached, while in Figs. 4, 6, and 7 I have shown the head B provided with an opening surrounded by the flange R, which flange is of a diameter commensurate with that of any form of lamp-socket now in use. Through the flange R, I pass set-screws, as S, by which any of these sockets may be held in place. This flange R also serves as a trunnion for the support of the lamp-casing, to which any suitable form of bearing in the yoke F may be fitted. Such hearing I have shown open or consisting of a hook, as T, which may be formed upon the-end of the yoke F in any suitable manner or may be made detachable therefrom, as indicated in dotted lines at T, Fig. 4. By making this hearing or arm of the yoke detachable a form of arm adapted for the reception of the casing shown in Figs. 1, 2, and 3 may be readily substituted for the open bearing. This second form of easing may be rendered axially adjustable within the yoke by the described.

If desired for a thorough diffusion of the light issuing from the casing, a semicylindrical shell of ground glass .may be inserted within the shell' D, as indicated in dotted lines at V, Fig. 5. The removability of the cap B enables this glass to be readily in sorted. This glass is also useful in preventin g dust from entering and collecting within the lamp-casing.

Other modifications in the construction of parts and many changes in the form and combinations thereof may be made aside from those shown and described without departing from my invention.

hat I claim as my invention is 1. The combination with the supportingbracket, of the casing having capped ends, a set screw adj ustably connecting one end thereof to the bracket, the-other one of said caps being provided with a flanged opening by which it is journaled in the bracket, setscrews passing through said flange, and an incandescentdamp socket removably held in place by said screws.

2. The combination with the bracket, of the outer semicylindrical shell mounted therein and adjustable about its axis and provided with the reflecting projection 8, the detached complementary opaque shell or shield mounted within the outer shell and axially ad j ustable therein irrespective of the adjustment of the outer shell and provided with the reflecting projection 8, circular caps. covering the ends of said outer shell and serving to confine the complementary shell within the outer one, and the electric-lamp socket secured in one of said caps, substantially as set-forth.

3. A lampsupporting bracket consisting of the arm N, having I a portion thereof bent downwardly, the clip I-l, fitted to slide upon said downwardly-bentportion and projecting along the other portion,'and a clamping-screw passing through the arm and clip, substantially as and for the purpose set forth.

4, The combination with the supportingyoke provided with a set-screw in one end and a bearing in the other, of a lamp-casing pivoted at one end upon said set-screw and provided at the other with means for holding the socket of an electric light and for projecting into said bearing to serve as a trunnion for the casing, substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 28d day of December, A. D. 1896.

\VILLIAM E. YARD.

Witnesses:

WM. II. CAPEL, D. II. DECKER. 

